let's begin with the resignation of general the t david petraeus. e-mails between him and paula broadwe broadwell, his biographer, were indicative of an extramarital affair. this is as petraeus' former spokesperson is speaking out granting his only television interview to nbc's chrkristen welker. she is in our washington bureau. kristen, good morning. >> reporter: good morning to you, lester. i end viewed steven broil. petraeus was in the comeback forces in iraq. he says he is stunned about the news of his former boss. new details are emerging about how this all came to light. according to multiple sources the down fall of general david petraeus all started with a seemingly unrelated complaint to the fbi. officials say it was triggered by e-mails from petraeus' biographer, paula broadwell, to another woman not related to petraeus who felt she was being harassed and complained to the fbi. officials say in recent weeks the fbi traced the e-mails to broadwell and only stumbled on the relationship with tpetraeus as a result. >> my first reaction was dis